Electrosurgical apparatus and methods for treatment and removal of tissue
First Claim
1. An electrosurgical probe, comprising:
- a return electrode including a return electrode head and a return electrode filament, the return electrode head comprising a return electrode coil;
an active electrode including an active electrode head and an active electrode filament; and
a connection block adapted for coupling the probe to an electrosurgical power supply, the return electrode filament and the active electrode filament independently coupled to the connection block.
3 Assignments
0 Petitions
Accused Products
Abstract
Apparatus and methods for ablating, severing, cutting, shrinking, coagulating, or otherwise modifying a target tissue to be treated. In a method for treating a target tissue, an active electrode of an electrosurgical probe is positioned in at least close proximity to the target tissue in the presence of an electrically conductive fluid. A high frequency voltage is then applied between the active electrode and a return electrode, wherein, the high frequency voltage is sufficient to volumetrically remove (ablate), sever, or modify at least a portion of the target tissue. The probe comprises a multi-lumen shaft having a plurality of internal lumens, and a return electrode coil oriented substantially parallel to the shaft distal end. The active electrode may be in the form of a metal disc, a hook, or an active electrode coil. In the latter embodiment, the active electrode coil is typically arranged substantially orthogonal to the return electrode coil. Methods of making an active electrode coil, a return electrode coil, and an electrosurgical probe are also disclosed.
185 Citations
82 Claims
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1. An electrosurgical probe, comprising:
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a return electrode including a return electrode head and a return electrode filament, the return electrode head comprising a return electrode coil;
an active electrode including an active electrode head and an active electrode filament; and
a connection block adapted for coupling the probe to an electrosurgical power supply, the return electrode filament and the active electrode filament independently coupled to the connection block. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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38. An electrosurgical probe, comprising:
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a shaft comprising a multi-lumen extrusion, the shaft having a shaft proximal end portion and a shaft distal end portion;
an electrode assembly at the shaft distal end portion; and
a connection block adapted for coupling the electrode assembly to an electrosurgical generator.
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61. An electrosurgical probe, comprising:
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a shaft having a shaft proximal end portion and a shaft distal end portion; and
an electrode assembly at the shaft distal end portion, the electrode assembly comprising an active electrode and a return electrode, the return electrode disposed within a lumen of the shaft, the return electrode in the form of a return electrode coil, the return electrode coil having an internal void, and the return electrode distal terminus arranged within the internal void. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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73. An electrosurgical probe, comprising:
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a shaft having a shaft proximal end portion and a shaft distal end portion; and
an electrode assembly at the shaft distal end portion, the electrode assembly comprising an active electrode and a return electrode, the active electrode comprising a metal disc. - View Dependent Claims (74, 75)
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76. An electrosurgical probe, comprising:
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a shaft having a shaft proximal end portion and a shaft distal end portion;
a return electrode comprising a return electrode coil; and
an active electrode having a distal end portion and a proximal end portion, the distal end portion comprising an active electrode coil having from about 0.5 to 1.5 turns, the active electrode coil oriented substantially orthogonal to the return electrode coil. - View Dependent Claims (77, 78, 79, 80, 81, 82)
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Specification